/* ==========================================================
   Crypto Escrow Platform - design system
   Professional fintech look: deep navy, teal accent, high
   contrast, generous whitespace. No external assets (fast,
   self-hosted, good Core Web Vitals).
   ========================================================== */
:root {
  --navy-900: #0b1526;
  --navy-800: #101f38;
  --navy-700: #17294a;
  --teal-500: #14b8a6;
  --teal-600: #0d9488;
  --teal-050: #ecfdf8;
  --ink-900: #111827;
  --ink-600: #4b5563;
  --ink-400: #9ca3af;
  --line: #e5e7eb;
  --bg: #ffffff;
  --bg-soft: #f6f8fb;
  --danger: #b91c1c;
  --danger-bg: #fef2f2;
  --success: #047857;
  --success-bg: #ecfdf5;
  --warn: #92400e;
  --warn-bg: #fffbeb;
  --radius: 10px;
  --shadow: 0 1px 3px rgba(11, 21, 38, .08), 0 8px 24px rgba(11, 21, 38, .06);
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font);
  color: var(--ink-900);
  background: var(--bg);
  line-height: 1.65;
  font-size: 16.5px;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; }
a { color: var(--teal-600); text-decoration: none; }
a:hover { text-decoration: underline; }

.container { max-width: 1080px; margin: 0 auto; padding: 0 20px; }

h1 { font-size: clamp(1.9rem, 4vw, 2.7rem); line-height: 1.2; letter-spacing: -.02em; }
h2 { font-size: clamp(1.4rem, 3vw, 1.9rem); line-height: 1.25; letter-spacing: -.01em; margin-bottom: .6rem; }
h3 { font-size: 1.12rem; margin-bottom: .4rem; }
/* Card headings are H2 for document outline reasons; size them like an H3. */
.card-title { font-size: 1.12rem; margin-bottom: .4rem; line-height: 1.3; letter-spacing: 0; }
p { margin-bottom: 1rem; }
.muted { color: var(--ink-600); }
.small { font-size: .88rem; }

/* ---------- Header ---------- */
.site-header {
  background: var(--navy-900);
  color: #fff;
  position: sticky; top: 0; z-index: 50;
  border-bottom: 1px solid rgba(255,255,255,.08);
}
/* Keep .container's 20px side padding: this element is .container.nav-wrap,
   and a `padding: 6px 0` shorthand here would zero the sides. */
.nav-wrap { display: flex; align-items: center; justify-content: space-between; min-height: 74px; gap: 20px; flex-wrap: wrap; padding: 6px 20px; }
.brand { display: inline-flex; align-items: center; gap: 12px; text-decoration: none; }
.brand:hover { text-decoration: none; opacity: .96; }
.brand-logo-img { height: 44px; width: auto; max-width: 300px; display: block; }
@media (max-width: 600px) {
  .brand-logo-img { height: 38px; }
  .nav-wrap { min-height: 64px; }
}
.main-nav { display: flex; align-items: center; gap: 20px; flex-wrap: wrap; }
.main-nav a { color: #d7dee9; font-size: .96rem; font-weight: 500; }
.main-nav a:hover { color: #fff; text-decoration: none; }
.nav-admin { color: var(--teal-500) !important; font-weight: 600; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-block; padding: 10px 22px; border-radius: var(--radius);
  font-weight: 600; font-size: .95rem; border: 2px solid transparent;
  cursor: pointer; transition: all .15s ease; text-align: center;
}
.btn:hover { text-decoration: none; }
.btn-primary { background: var(--teal-500); color: #06281f; }
.btn-primary:hover { background: var(--teal-600); color: #fff; }
.btn-outline { border-color: rgba(255,255,255,.35); color: #fff; }
.btn-outline:hover { border-color: #fff; }
.btn-outline-ink, .btn-outline-ink:hover { border-color: var(--line); color: var(--ink-900); }
.btn-dark { background: var(--navy-900); color: #fff; }
.btn-dark:hover { background: var(--navy-700); }
.btn-danger { background: var(--danger); color: #fff; }
.btn-lg { padding: 14px 32px; font-size: 1.05rem; }
.btn-sm { padding: 6px 14px; font-size: .85rem; }
.btn-block { width: 100%; }
.btn-line { border: 1px solid var(--line); }
.btn-link { background: none; border: 0; color: #d7dee9; cursor: pointer; font: inherit; font-size: .95rem; }
.btn-link:hover { color: #fff; }
.inline-form { display: inline; }

/* ---------- Hero ---------- */
.hero {
  background: linear-gradient(160deg, var(--navy-900) 0%, var(--navy-700) 100%);
  color: #fff; padding: 72px 0 84px;
}
.hero h1 { max-width: 720px; }
.hero .sub { font-size: 1.2rem; color: #c3cede; max-width: 640px; margin: 18px 0 30px; }
.hero-badges { display: flex; gap: 14px; flex-wrap: wrap; margin-top: 34px; }
.badge {
  background: rgba(255,255,255,.07); border: 1px solid rgba(255,255,255,.14);
  padding: 8px 16px; border-radius: 999px; font-size: .87rem; color: #d7dee9;
}

/* ---------- Sections ---------- */
.section { padding: 64px 0; }
.section-soft { background: var(--bg-soft); }
.section-dark { background: var(--navy-900); color: #fff; }
.section-dark .muted { color: #a9b6c8; }
.section-head { max-width: 680px; margin-bottom: 36px; }

.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 22px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
@media (max-width: 860px) { .grid-3, .grid-4 { grid-template-columns: 1fr 1fr; } }
@media (max-width: 600px) { .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; } }

.card {
  background: var(--bg); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 26px; box-shadow: var(--shadow);
}
.card h3 { color: var(--navy-800); }
.step-num {
  display: inline-flex; align-items: center; justify-content: center;
  width: 40px; height: 40px; border-radius: 50%;
  background: var(--teal-050); color: var(--teal-600);
  font-weight: 700; font-size: 1.1rem; margin-bottom: 14px;
}
.icon-dot { font-size: 1.5rem; color: var(--teal-500); display: block; margin-bottom: 10px; }

/* ---------- Breadcrumbs ---------- */
.breadcrumbs { padding: 14px 20px; font-size: .87rem; color: var(--ink-600); display: flex; gap: 8px; flex-wrap: wrap; }

/* ---------- Prose (landing/legal copy) ---------- */
.prose { max-width: 760px; }
.prose h2 { margin-top: 2.2rem; }
.prose ul, .prose ol { margin: 0 0 1rem 1.4rem; }
.prose li { margin-bottom: .4rem; }

/* ---------- FAQ ---------- */
.faq-item { border-bottom: 1px solid var(--line); padding: 4px 0; }
.faq-item summary {
  cursor: pointer; font-weight: 600; padding: 14px 0; list-style: none;
  display: flex; justify-content: space-between; align-items: center; gap: 12px;
}
.faq-item summary::after { content: "+"; color: var(--teal-600); font-size: 1.3rem; flex-shrink: 0; }
.faq-item[open] summary::after { content: "\2212"; }
.faq-item .answer { padding: 0 0 16px; color: var(--ink-600); max-width: 720px; }

/* ---------- Flash ---------- */
.flash { padding: 13px 18px; border-radius: var(--radius); margin: 16px 0; font-size: .95rem; }
.flash-error { background: var(--danger-bg); color: var(--danger); border: 1px solid #fecaca; }
.flash-success { background: var(--success-bg); color: var(--success); border: 1px solid #a7f3d0; }
.flash-warn { background: var(--warn-bg); color: var(--warn); border: 1px solid #fde68a; }

/* ---------- Forms ---------- */
.form-card { max-width: 480px; margin: 48px auto; }
.form-wide { max-width: 640px; }
.field { margin-bottom: 18px; }
.field label { display: block; font-weight: 600; font-size: .92rem; margin-bottom: 6px; }
.field input, .field select, .field textarea {
  width: 100%; padding: 11px 14px; border: 1.5px solid var(--line);
  border-radius: 8px; font: inherit; font-size: .97rem; background: #fff;
}
.field input:focus, .field select:focus, .field textarea:focus {
  outline: none; border-color: var(--teal-500); box-shadow: 0 0 0 3px rgba(20,184,166,.15);
}
.field .hint { font-size: .83rem; color: var(--ink-600); margin-top: 4px; }

/* ---------- Tables ---------- */
.table-wrap { overflow-x: auto; }
table.data { width: 100%; border-collapse: collapse; font-size: .93rem; }
table.data th, table.data td { text-align: left; padding: 11px 12px; border-bottom: 1px solid var(--line); vertical-align: top; }
table.data th { background: var(--bg-soft); font-size: .82rem; text-transform: uppercase; letter-spacing: .04em; color: var(--ink-600); }
table.data tr:hover td { background: #fafbfd; }
.mono { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: .86em; word-break: break-all; }
.table-narrow { max-width: 420px; }

/* ---------- Status pills ---------- */
.pill { display: inline-block; padding: 3px 12px; border-radius: 999px; font-size: .8rem; font-weight: 600; white-space: nowrap; }
.pill-draft, .pill-pending_acceptance { background: #eef2f7; color: var(--ink-600); }
.pill-awaiting_deposit, .pill-deposit_reported { background: var(--warn-bg); color: var(--warn); }
.pill-funded, .pill-delivered { background: #e0f2fe; color: #075985; }
.pill-released { background: var(--success-bg); color: var(--success); }
.pill-refunded { background: #ede9fe; color: #5b21b6; }
.pill-disputed { background: var(--danger-bg); color: var(--danger); }
.pill-cancelled { background: #f3f4f6; color: var(--ink-400); }
.pill-lg { font-size: .95rem; }

/* ---------- Dashboard / admin ---------- */
.page-head { display: flex; justify-content: space-between; align-items: center; gap: 16px; flex-wrap: wrap; margin: 36px 0 24px; }
.stat-row { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 14px; margin-bottom: 30px; }
.stat { background: var(--bg); border: 1px solid var(--line); border-radius: var(--radius); padding: 18px; }
.stat .n { font-size: 1.7rem; font-weight: 700; color: var(--navy-800); }
.stat .l { font-size: .82rem; color: var(--ink-600); text-transform: uppercase; letter-spacing: .04em; }
.timeline { border-left: 2px solid var(--line); padding-left: 18px; margin: 12px 0; }
.timeline .tl-item { margin-bottom: 12px; font-size: .9rem; }
.msg { border: 1px solid var(--line); border-radius: var(--radius); padding: 12px 16px; margin-bottom: 10px; background: #fff; }
.msg .who { font-weight: 600; font-size: .88rem; }
.msg .when { color: var(--ink-400); font-size: .8rem; }
.msg-body { margin: 6px 0 0; white-space: pre-wrap; }
.admin-note { background: var(--warn-bg); border-color: #fde68a; }
.action-panel { background: var(--bg-soft); border: 1px solid var(--line); border-radius: var(--radius); padding: 20px; margin-top: 20px; }
.action-panel form { margin-bottom: 14px; }
.deposit-box { background: var(--navy-900); color: #fff; border-radius: var(--radius); padding: 22px; margin: 18px 0; }
.deposit-box .addr { font-family: ui-monospace, Menlo, Consolas, monospace; word-break: break-all; background: rgba(255,255,255,.08); padding: 10px 14px; border-radius: 8px; margin-top: 8px; }

/* ---------- Fee calculator ---------- */
.calc { background: var(--bg); border: 1px solid var(--line); border-radius: var(--radius); padding: 28px; box-shadow: var(--shadow); max-width: 460px; }
.calc-result { font-size: 1.15rem; margin-top: 14px; }
.calc-result strong { color: var(--teal-600); }

/* ---------- Footer ---------- */
.site-footer { background: var(--navy-900); color: #c3cede; margin-top: 64px; padding: 52px 0 24px; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr 1fr; gap: 30px; padding-bottom: 34px; }
@media (max-width: 900px) { .footer-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 560px) { .footer-grid { grid-template-columns: 1fr; } }
.site-footer h3 { color: #fff; font-size: .9rem; text-transform: uppercase; letter-spacing: .05em; margin-bottom: 12px; }
.site-footer nav a { display: block; color: #c3cede; font-size: .92rem; margin-bottom: 8px; }
.site-footer .brand { color: #fff; margin-bottom: 12px; display: inline-block; }
.site-footer .brand-logo-footer { height: 40px; width: auto; max-width: 280px; display: block; margin-bottom: 10px; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,.1); padding-top: 20px; font-size: .85rem; }

/* ---------- CTA band ---------- */
.cta-band { text-align: center; padding: 64px 20px; }
.cta-band h2 { color: #fff; }
.cta-band p { color: #a9b6c8; max-width: 560px; margin: 12px auto 26px; }

/* ---------- Legal & Compliance Documentation ---------- */
.legal-hero { padding: 48px 0 36px; background: linear-gradient(160deg, var(--navy-900) 0%, var(--navy-800) 100%); color: #fff; }
.legal-hero h1 { margin-bottom: 8px; }
.legal-hero .sub { color: #c3cede; font-size: 1.1rem; max-width: 720px; margin-bottom: 20px; }
.legal-meta-bar { display: flex; gap: 12px; flex-wrap: wrap; align-items: center; margin-top: 14px; }
.legal-meta-tag { display: inline-flex; align-items: center; gap: 6px; padding: 4px 12px; border-radius: 999px; font-size: .82rem; font-weight: 500; background: rgba(255,255,255,.08); color: #d7dee9; border: 1px solid rgba(255,255,255,.14); }
.legal-meta-tag.highlight { background: rgba(20,184,166,.15); color: var(--teal-500); border-color: rgba(20,184,166,.35); }

.legal-tab-bar { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 32px; border-bottom: 2px solid var(--line); padding-bottom: 12px; }
.legal-tab-link { padding: 8px 18px; border-radius: 8px; font-weight: 600; font-size: .92rem; color: var(--ink-600); transition: all .15s ease; }
.legal-tab-link:hover { color: var(--navy-900); background: var(--bg-soft); text-decoration: none; }
.legal-tab-link.active { color: var(--teal-600); background: var(--teal-050); }

.legal-toc { background: var(--bg-soft); border: 1px solid var(--line); border-radius: var(--radius); padding: 22px 26px; margin: 28px 0 40px; box-shadow: var(--shadow); }
.legal-toc-title { font-weight: 700; font-size: 1.05rem; color: var(--navy-900); margin-bottom: 14px; display: flex; align-items: center; gap: 8px; }
.legal-toc-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 8px 24px; list-style: none; margin: 0; padding: 0; font-size: .9rem; }
@media (max-width: 700px) { .legal-toc-grid { grid-template-columns: 1fr; } }
.legal-toc-grid li { margin: 0; padding: 2px 0; }
.legal-toc-grid a { color: var(--ink-600); display: inline-block; }
.legal-toc-grid a:hover { color: var(--teal-600); text-decoration: underline; }

.legal-callout { border-left: 4px solid var(--teal-500); background: var(--teal-050); border-radius: 0 8px 8px 0; padding: 18px 20px; margin: 24px 0; font-size: .94rem; color: #0f3933; }
.legal-callout h4 { font-size: 1rem; color: #0b2d28; margin-bottom: 6px; font-weight: 700; }
.legal-callout-warn { border-left-color: #f59e0b; background: var(--warn-bg); color: var(--warn); }
.legal-callout-warn h4 { color: #78350f; }
.legal-callout-alert { border-left-color: var(--danger); background: var(--danger-bg); color: #7f1d1d; }
.legal-callout-alert h4 { color: var(--danger); }

.legal-table-wrap { margin: 22px 0; border: 1px solid var(--line); border-radius: 8px; overflow-x: auto; }
.legal-table-wrap table { width: 100%; border-collapse: collapse; font-size: .91rem; }
.legal-table-wrap th, .legal-table-wrap td { padding: 12px 14px; text-align: left; border-bottom: 1px solid var(--line); }
.legal-table-wrap th { background: var(--bg-soft); font-weight: 600; color: var(--navy-900); font-size: .85rem; text-transform: uppercase; letter-spacing: .03em; }
.legal-table-wrap tr:last-child td { border-bottom: none; }
.legal-table-wrap tr:hover td { background: #fafbfd; }

.legal-section { margin-bottom: 48px; scroll-margin-top: 80px; }
.legal-section h2 { font-size: 1.45rem; color: var(--navy-900); border-bottom: 1px solid var(--line); padding-bottom: 8px; margin-top: 0; margin-bottom: 16px; }
.legal-section h3 { font-size: 1.15rem; color: var(--navy-800); margin-top: 20px; margin-bottom: 8px; }
.legal-section p, .legal-section li { color: #2d3748; line-height: 1.7; }
.legal-section ul, .legal-section ol { margin-left: 20px; margin-bottom: 16px; }
.legal-section li { margin-bottom: 8px; }

.back-to-top { display: inline-flex; align-items: center; gap: 4px; font-size: .82rem; color: var(--ink-400); margin-top: 14px; text-decoration: none; }
.back-to-top:hover { color: var(--teal-600); }

/* ---------- Page titles & utilities ----------
   Keep these last so they win the cascade over component defaults
   (e.g. .mt-36 overriding .form-card's top margin). Required because
   the CSP (style-src 'self') forbids inline style attributes. */
.page-title { font-size: 1.6rem; }
.page-title-sm { font-size: 1.5rem; }
.sub-title { font-size: 1.2rem; }
.text-center { text-align: center; }
.pre-wrap { white-space: pre-wrap; }
.link-danger { cursor: pointer; color: var(--danger); font-weight: 600; }
.empty-state { text-align: center; padding: 48px; }
.pt-96 { padding-top: 96px; }
.mt-10 { margin-top: 10px; }
.mt-12 { margin-top: 12px; }
.mt-14 { margin-top: 14px; }
.mt-16 { margin-top: 16px; }
.mt-20 { margin-top: 20px; }
.mt-28 { margin-top: 28px; }
.mt-36 { margin-top: 36px; }